LIDAR stands for light detection and ranging, it is a type of remote sensing technology that uses scattered light to determine the range to a particular target. LIDAR was used to produce this image of New York City, as you can see shapes and heights of buildings, roads, and even trees can be seen in great detail. This type of technology is often used to create a 3D replica of a particular place.
http://www.noaanews.noaa.gov/stories/images/manhattan-lidar092701.jpg
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